I found the following on EFL.com. Jan to early March fixtures should have been announced a week ago, it does my head in when organisations publish details of what they will do and then don't bother following through.
The notice periods for selections are as follows:
Within seven days of the 2024/25 Fixture Release selections shall be made in respect of all matches to be played before the end of September.
Before the start of the season, selections shall be made in respect of all matches scheduled to be played prior to the end of the third round of the FA Cup (January 2024).
By November 1, selections shall be made in respect of all matches to be played between the end of the third round proper of the FA Cup and the first weekend of March.
Selections for matches scheduled after the first weekend in March will be made on a four-week rolling basis starting from February 1 (e.g. a selection for the first weekend in April will be selected in the first weekend in March).